Lake co. seems to be mostly conventional.
The link is here:
http://www.radioreference.com/modules.php?name=RR&ctid=1269
the conventional freqs look like this:
Lake, County of []
Frequency Input License Type Tone Description Mode
155.86500 KXE704 M M.E.P.S.S. - Statewide Emergency FM
155.74500 153.90500 WNWV404 RM Emergency Management FM
154.43000 154.01000 WNWR496 RM 118.8 PL Fire - Dispatch FM
154.26500 WPTK329 M Fire - Fireground FM
154.29500 WPTK329 M Fire - DNR Fireground FM
39.82000 KFU224 BM Mutual Aid FM
150.99500 159.06000 KNDN956 RM 173.8 PL Road Commission FM
155.37000 KXE704 B Sheriff - Point-to-Point FM
155.58000 KXE704 BM Sheriff - LEIN FM
155.68500 158.97000 KXE704 RM 110.9 PL Sheriff - 9-1-1 Central Dispatch FM
158.85000 KXE704 MF Tactical FM
I don't know enough about Lake co. to say what MPSCS sites are there or what type of scanner you have to say if you can monitor it.